MadelineProtoDocs/old_docs/API_docs_v46/methods/account.updateUsername.md

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---
title: account.updateUsername
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description: Changes username for the current user.
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image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
---
# Method: account.updateUsername
[Back to methods index](index.md)
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Changes username for the current user.
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### Parameters:
| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
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|username|[string](../types/string.md) | Username or empty string if username is to be removed<br>Accepted characters: a-z (case-insensitive), 0-9 and underscores.<br>Length: 5-32 characters. | Yes|
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### Return type: [User](../types/User.md)
### Can bots use this method: **NO**
### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
```php
if (!file_exists('madeline.php')) {
copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';
$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();
$User = $MadelineProto->account->updateUsername(['username' => 'string', ]);
```
Or, if you're into Lua:
```lua
User = account.updateUsername({username='string', })
```
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### Errors
| Code | Type | Description |
|------|----------|---------------|
|400|USERNAME_INVALID|The provided username is not valid|
|400|USERNAME_NOT_MODIFIED|The username was not modified|
|400|USERNAME_OCCUPIED|The provided username is already occupied|
|401|SESSION_PASSWORD_NEEDED|2FA is enabled, use a password to login|
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